Change History

Can not reproduce it here, both Video & Audio calls work ok on Vista & XP with the latest WLM for me.
What host Windows OS version are you running?
Could you also ensure the VBox Host-only network connection has the lowest priority (i.e. lesser than the one(s) used for your phisical NIC(s)).
To do this in the "Network Connections" window go to "Advanced->Advanced settings" menu (on Vista press "Alt" to make menu visible), and make sure the "Host-Only.." connection is located at the bottom in the "Connections" list on "Adapters And Bindings" tab of "Advanced Settings" dialog.